What is the correct installation torque and sealing method for an ORFS bushing for metric tubing, carbon steel, type FM to ensure leak-free connection?

ORFS bushing for metric tubing, carbon steel, type FM Format . correct installation and sealing: 1. Preparation - Verify D1 (inner) and D2 (outer) diameters match the metric tubing and port. - Clean threads, sealing faces and tubing end of debris, oil and damage. - Cut tubing square, deburr inside and outside, and slide the ORFS sleeve onto the tube until it seats on the tube shoulder. 2. Sealing principle - Sealing is achieved by a flat metal-to-metal face between the ORFS sleeve and the port; no thread sealant or PTFE tape on the face. Thread area may use thread lubricant to achieve correct torque. 3. Installation torque - Use manufacturerâs torque table if available based on D2 outer diameter and thread size. If table unavailable, use these typical torque ranges for carbon steel ORFS bushings (approximate; verify against component spec): - Small metric sizes (M12âM16 thread equivalent): 20â40 Nm - Medium sizes (M18âM22): 40â80 Nm - Larger sizes (M24âM30): 80â150 Nm Tighten smoothly until the ORFS flat face contacts the port face; then apply final torque within the range. Do not overtighten. 4. Procedure steps - Hand-start threads to avoid cross-threading. - Tighten finger-tight, then use a calibrated torque wrench to the specified torque. - After initial tightening, cycle system pressure and re-torque if manufacturer advises (some assemblies require a short re-torque after pressure stabilization). 5. Notes for leak-free connection - Ensure sleeve sits squarely on tube and port face.any gap or tilted seating causes leaks. - Replace damaged sleeves; do not reuse distorted sealing faces. - Use compatible galvanization and corrosion protection for carbon steel in the application environment. If exact torque values are required for your specific D2/thread size, provide the thread designation or D2 and I will give the precise torque from the manufacturer table.

How does surface finish affect sealing reliability of an ORFS bushing for metric tubing, carbon steel, type FM?

Surface finish of the ORFS bushing for metric tubing, carbon steel, type FM directly affects sealing reliability by controlling contact conformity and preventing leakage. A smoother finish on the sealing face ensures uniform metal-to-metal contact with the mating ORFS sleeve, reducing micro-gaps where fluid can escape. Excessive roughness can create channels for leakage and accelerate wear of the sealing lip. Conversely, a finish that is too smooth or glazed may reduce friction needed to maintain a stable seal under pressure cycles. For the ORFS bushing for metric tubing, carbon steel, type FM (D1 = inner diameter, D2 = outer diameter, material: carbon steel, galvanized), an optimized medium-fine surface finish combined with proper dimensional tolerances and plating (galvanization) promotes consistent compression of the ORFS sleeve, improving sealing reliability and service life.

Can ORFS bushing for metric tubing, carbon steel, type FM be used with stainless steel tubing or only carbon steel?

ORFS bushing for metric tubing, carbon steel, type FM (Material: carbon steel, galvanized; D1 = inner diameter, D2 = outer diameter) is designed and specified as a carbon steel component. Mechanically it can fit stainless steel tubing of the same metric dimensions (D1/D2) because the sleeveâs geometryâinner bore and outer diameterâdetermines fit, not tube material. However, there are important considerations: - Galvanized carbon steel in contact with stainless steel can create galvanic corrosion in certain environments (especially when exposed to moisture, salts, or electrolytes). This may shorten service life or cause corrosion at the junction. - Thermal expansion, mechanical compatibility, and required corrosion resistance of the application: stainless tubing is often chosen for corrosion resistance; pairing it with galvanized carbon steel negates some benefits. - Pressure rating and mechanical strength depend on sleeve design and tube wall thickness; ensure the combination meets hydraulic/mechanical specifications. - Best practice: for corrosive or hygienic environments, use matching materials (stainless steel bushing) or apply appropriate isolation/coating measures. - If application is non-corrosive, dry, and sealed, many installations with carbon steel sleeves and stainless tubing perform acceptably, but risk remains. Conclusion: ORFS bushing for metric tubing, carbon steel, type FM can be used with stainless steel tubing from a dimensional/fit standpoint, but due to galvanic corrosion and material-compatibility concerns it is recommended to use a stainless steel bushing or take corrosion-mitigation measures when stainless tubing is specified.

ORFS bushing for metric tubing, carbon steel, type FM

Additional information

Material	CS – steel (cast iron)

ORFS sleeve for metric tubing, type FM. Diameter D1 [mm] – inner diameter. Diameter D2 [mm] – outer diameter. Material: carbon steel, galvanized.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HO-FM-06	ORFS sleeve for 6 mm tube	6	-	In stock	Enquiry
HO-FM-08	ORFS sleeve for 8 mm tube	8	-	In stock	Enquiry
HO-FM-10	ORFS sleeve for 10 mm tube	10	-	In stock	Enquiry
HO-FM-12	ORFS sleeve for 12 mm tube	12	-	In stock	Enquiry
HO-FM-14	ORFS sleeve for 14 mm tube	14	-	In stock	Enquiry
HO-FM-15	ORFS sleeve for 15 mm tube	16	-	In stock	Enquiry
HO-FM-16	ORFS sleeve for 16 mm tube	16	-	In stock	Enquiry
HO-FM-18	ORFS sleeve for 18 mm tube	18	-	In stock	Enquiry
HO-FM-20	ORFS sleeve for 20 mm tube	20	-	In stock	Enquiry
HO-FM-22	ORFS sleeve for 22 mm tube	22	-	In stock	Enquiry
HO-FM-25	ORFS sleeve for 25 mm tube	25	-	In stock	Enquiry
HO-FM-28	ORFS sleeve for 28 mm tube	28	-	In stock	Enquiry
HO-FM-30	ORFS sleeve for 30 mm tube	30	-	In stock	Enquiry
HO-FM-32	ORFS sleeve for 32 mm tube	32	-	In stock	Enquiry
HO-FM-35	ORFS sleeve for 35 mm tube	35	-	In stock	Enquiry
HO-FM-38	ORFS sleeve for 38 mm tube	38	-	In stock	Enquiry